The Town of Headcounts

Aoyama is harassed over debts. He arrives in a mysterious town. People can enter the town freely, but they cannot leave. The town provides the basic necessities of life, including food, clothing, and a place to live. The people there can indulge in pleasures every day. By communicating with the people, Aoyama approaches the mystery of the town.
(Source: AsianWiki)